Newhouse Hardware 24V 40VA Door Bell Transformer Compatible with Ring Video Doorbell Pro 40TR, Wired Chimes

I’ve had good luck with this transformer for my eufy doorbell. 24V/40VA transformerhttps://a.co/d/hxs8tFM

If you decide to hardwire it, use this transformer below. I started with the minimum requirement transformer and it didn’t power the doorbell enough. The one below has been working flawlessly for me for almost a year. 24V/40VA transformerhttps://a.co/d/hxs8tFM

I’d upgrade the transformer. I started with a 16v 30VA and it really struggled to keep the doorbell battery charged. I replaced it with a 24V/40VA transformer and haven’t had to touch it since I installed it almost a year ago. 24V/40VA transformerhttps://a.co/d/hxs8tFM

I bought this transformer for my E340 doorbell and it works great and stays charged. 24V/40VA transformerhttps://a.co/d/hxs8tFM